Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Comprehensive Income (Parenthetical)

v2.4.1.9
Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]        
Pension and postretirement, tax $ 0us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax $ 0.5us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax $ 0.5us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax $ 1.5us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
Change in net unrealized gain (loss) on derivative instruments, tax $ 1.4us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax $ 0.3us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax $ 1.6us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax $ 0.1us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax